It's important for your website to be built to the correct standards published by World Wide Consortium (W3C) to ensure the quality and accessibility of your site.
Use this tool to easily and quickly assess if your web page has the correct HTML markup to meet these standards. Please note, this check could take up to two minutes so be patient!
This facility can be very useful when upgrading an existing HTML4 page to HTML5. By entering your existing HTML4 page url, then selecting HTML5 encoding, an appreciation of the work ahead can be gained.
Other uses include foreign character sets. Website translations often involve a different charset in order to display all of the new countries alphabet. Select your existing page then set the charset to that require by the new language and validate the page.
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